Anybody have any experience successfully shipping larger format (13 x 19) prints flat (not rolled)?

I know how I have received stuff: the print is sandwiched between two heavy cardboard pieces, and kept in place between them with "corners." Perhaps this is the best way.

I will be sending these overseas (to Japan), and it just concerns me that this might not provide enough protection. I can picture the cardboard getting bent.

The alternative is to find a box big enough to fit the dimensions and then pad with packing peanuts, etc., but seems like that is going to be really bulky.

Any thoughts?

Thank you.

Cardboard is okay, but due to the corrugation in them they can fold easy and are usually flimsy. Your best bet is to go to your local art supply store and get poster board / illustration board and cut a few pieces to size ( obviously larger than the print). Use like 3 pieces on each side so a total of six sheets. They are much more sturdier and is the way I ship prints, never had a problem. They wont take a fold easily this way and will protect the print well in case the outer package takes a rip or tear.

Thanks!!!